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bindings: a C ABI and an npm package alongside the wheel

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@@ -56,7 +56,29 @@ command does can be done in process instead.
| [`textkit`](crates/textkit/README.md) | Token counting, sentence and paragraph splitting |
| [`cuekit`](crates/cuekit/README.md) | The cue model, and the three subtitle formats it is read from |
| [`catena-cli`](crates/catena-cli/README.md) | The parts of a filter every command does the same way |
| [`bindings`](crates/bindings/README.md) | The same libraries from Python, for callers already holding the text |
| [`bindings`](crates/bindings/README.md) | The same libraries from Python, C and JavaScript |
## From another language
The tools are filters first, and a subprocess is the right answer most of the
time. When the caller is already holding the text, the same libraries are
callable in process from three languages:
| | Install | Import |
|---|---|---|
| **Python** | `pip install catena` | `import catena` |
| **JavaScript** | `npm install catena` | `import { chunkMarkdown } from "catena"` |
| **C** | build the `capi` feature | `#include <catena.h>` |
```python
chunks = catena.chunk_markdown(markdown, target=512)
chunks[0]["page"] # 41
```
Each hands back the same record shapes the commands write — dictionaries in
Python, plain objects in JavaScript, JSON in C — so a stage that was parsing
NDJSON from a subprocess can call the function and get what it was already
parsing. Details in [`bindings`](crates/bindings/README.md).
## A worked pipeline